Mufeed Alnimer

• PhD Reproductive Physiology
• University of Jordan

Background and Aim Dairy farm profitability is linked to milk yield and reproductive efficiency. High prolactin levels during lactation can negatively impact fertility. Timed AI protocols like PG7G are used to improve pregnancy rates. This study investigates the effects of extending the voluntary waiting period (VWP) from 63 to 73 days after the PG...

An androgen excess ovarian microenvironment may limit follicle progression in sheep. Two populations of ewes with divergent follicular fluid androstenedione (A4) were identified in a flock in Jordan: High A4; (A4) ≥ 30 ng/mL, (n=12) or Control A4 (Control); A4 ≤ 15 ng/mL; (n=12). We hypothesized High A4 ewes would have increased steroidogenic enzym...

Background: For a child's healthy growth and development, nutrition is indispensable before and during pregnancy. Meeting nutritional needs during pregnancy has always been a significant public health issue. Objective: The study aimed to assess and evaluate energy, macronutrients, and micronutrient consumption from food among pregnant women in Amma...

The effect of rumen-protected methionine (RPM) was investigated in Awassi ewes (0, 3 or 5 g/head/d, n = 20) on reproductive and productive performance (initial body weight [BW] = 70.9 − 71.8 kg, 3 − 5 years). Supplementation started with the flushing feeding regime (at the breeding time) and lasted for 42 d. RPM was reused during the last 60 d of p...

Background and Aim: Heat stress (HS) can negatively impact farm animal productivity and adversely affect animal welfare worldwide, placing a major financial burden on global livestock producers. Dietary betaine (trimethylglycine) has been known to have several biological functions, which may aid in offering beneficial effects on livestock productiv...

The aim of this study was to evaluate the effect of high doses of calcium bentonite on the blood parameters, anticoccidial activity and intestinal histology of broiler chickens. Three hundred and sixty one-day old broilers were distributed into three treatments (T +VE , T-VE , T B) with three replicates. Amprolium was added to the feed of the posit...

This study aimed to uncover the prevalence of anthelmintic resistance in ovine gastrointestinal nematodes in middle and north Jordan and to check the in vivo anthelmintic efficacy of apple cider vinegar drench and ginger powder. For this purpose a parasitological study was designed, which used fecal egg count reduction test Two hundred seventy ewes...

The objective of this study was to test whether prostaglandin (PG) injection on day 30 postpartum (pp) and detection of estrus can affect the efficacy of injecting PG on days 5 and 6 in the timed artificial insemination (TAI) protocol on pregnancy rate in a large dairy herd in hot or cold seasons. Out of 2235 cows, 1998 received an injection of PG...

This study was undertaken to detect pregnancy in Iraqi riverine buffalo (Bubalus bubalis) using three different methods (rectal palpation, plasma progesterone concentration and detection of the presence of pregnancy-specific protein B (PSPB) with the BioPRYN� enzyme-linked immunosorbent assay (ELISA) test. The aim of the study was to identify the m...

Two treatment groups of postpartum Friesian cows (n =276) were synchronized for estrus starting on d 10 of the estrous cycle. GPG: GnRH-PGF2α-GnRH and timed AI, GPE: GnRH-PGF2α-EB and AI at detected estrus. Pregnancy rates for first AI at d 28 (46.7 ± 4.4 and 48.4 ± 4.9%), at d 45 post-AI (34.7 ± 4.2 and 34.1 ± 4.7%) and the cumulative (87.3 ± 2.3...

This study aimed to determine the level of knowledge of consumers on two types of food poisoning (salmonellosis and shigellosis), awareness of the pathogens causing this kind of poisoning, methods of transmission. The research sample consisted of 2185 students and 320 employees from JordanUniversity; the research sample was collected using an onlin...

Cosynch-72 (CO-72) is one of the most widely known timed AI (TAI) protocols in cattle. The protocol involves giving GnRH on d-7, PGF2α on day 0, and the second GnRH on day 3 concurrent with AI. CO-72 has been adapted as the standard reproductive management protocol in postpartum (pp) dairy cows in several large dairy farms in Jordan. This research...

Sixty Holstein heifers (30 days in milk) were used to examine the effects of protected methionine on milk production, milk composition and reproduction performance up to 100 days post-partum. Heifers were randomly divided into two dietary treatment groups (30 each) receiving either 14 or 16 % crude protein. Heifers of each treatment group were assi...

This study conducted to evaluate semen quality and plasma testosterone (T), tetra-iodothyronine (T4), and tri-iodothyronine (T3) concentrations for different strains of Awassi sheep of different ages in Jordan. Physical traits, semen characteristics and blood samples were assessed in 12 local Awassi rams (6 matures and 6 yearlings) and the 7 crosse...

Lactating dairy cows (n=53) were used to evaluate the effect of two estrous synchronization protocols starting between d 10-12 of the estrous cycle on reproductive performance. Cows in the Ovsynch (Control) treatment (n = 24) received an i.m. injection of 10µg Gonadotropin Releasing Hormone (GnRH) agonist (Buserelin, Receptal ®), followed 7 d later...

This research was designed to study the effectiveness of applying three Timed Artificial Insemination (TAI) protocols on reproductive performance of Holstein Friesian lactating dairy cows. A group of 173 cows received an injection of GnRH on day 44 postpartum (pp) and PGF 2α 7 d later, and then assigned into three treatments: (1) CO-72 (n = 65), re...

A total of 332 postpartum (pp) lactating Friesian cows allocated in two treatment groups at a commercial dairy farm were used to study the effect of a modified Ovsynch protocol supplemented with exogenous estradiol (E2) on fertility in lactating dairy cows during the summer season. All cows were injected with gonadotrophin releasing hormone (GnRH),...

A total of 332 postpartum (pp) lactating Friesian cows allocated in two treatment groups at a commercial dairy farm were used to study the effect of a modified Ovsynch protocol supplemented with exogenous estradiol (E2) on fertility in lactating dairy cows during the summer season. All cows were injected with gonadotrophin releasing hormone (GnRH),...

A study was done to evaluate the effect of using progesterone (P4) intravaginal device (CIDR: controlled internal drug-releasing dispenser) to synchronise the return to oestrus of previously timed inseminated (TAI) dairy heifers, and to evaluate embryo survival and pregnancy rate (PR) in the return to oestrus heifers. At the onset of the artificial...

Two modifications of the Ovsynch protocol, GnRH+TAI after PGF(2 alpha) 48 h (CO-48) or 72 h (CO-72), were compared with the original protocol (OVS: GnRH-7 d-PGF(2 alpha)-2 d-GnRH-16 h-TAI) to study their effects on reproductive performance in 785 lactating dairy cows (Holstein Friesian, Bos Taurus). Results showed that more cows (P<0.001) returned...

A study on postpartum dairy cows was done to evaluate the effect of using progesterone intravaginal device (CIDR) to synchronize return to oestrus of previously timed inseminated (TAI) cows and to evaluate embryo survival and pregnancy rate in the return to oestrus cows. All cows were subjected to TAI program. On Day 14 after AI, cows were assigned...

This study was carried out to evaluate the effect of feeding a dry fat source to seasonal ewes and does on their postpartum reproductive performance. Forty five multiparous Awassi ewes (LW=60.1±3.2 kg) and 45 Shami does (LW=49.6±2.4 kg) were randomly assigned into 3 dietary treatments (n=15/spp) for 60 days postpartum in a completely randomized des...

A total of 586 Awassi ewes of varying ages were mated to 11 Jordanian and 11 Syrian Awassi rams either naturally or artificially during the normal breeding season to evaluate reproductive performance of Awassi sheep and compare the local Awassi rams to Syrian rams. The length of the estrous cycle was longer (P < 0.01) during June to July (28.6 + 0....

A total of 586 Awassi ewes of varying ages were mated to 11 Jordanian and 11 Syrian Awassi rams either naturally or artificially during the normal breeding season to evaluate reproductive performance of Awassi sheep and compare the local Awassi rams to Syrian rams. The length of the estrous cycle was longer (P < 0.01) during June to July (28.6 + 0....

Fifty repeat breeder (RB) Friesian cows were allocated to five groups of 10 cows each, to determine the effect of progesterone (P4) supplement on P4 concentrations and pregnancy rates during the periods of corpus luteum (CL) formation and development between days 2-7 and 7-12 following a spontaneous or PGF2??induced estrus. Cows were artificially i...

An experiment was conducted to examine the effect of progesterone (P(4)) and oestradiol benzoate (ODB) on fertility of repeat-breeder lactating dairy cows during summer. One hundred repeat-breeder lactating dairy cows were randomly allocated to four groups (Tr1, Tr2, Tr3 and C) in a study conducted at a private dairy farm. All cows were injected wi...

Eighty‐four Awassi ewes in five groups were used to study the effect of using different hormonal treatments or ram effect on oestrus synchronisation and fertility at the beginning of the breeding season. At the onset of the treatments, gonadotropin releasing hormone‐prostaglandin F2α (Gn‐PG, n = 17) ewes received gonadotropin releasing hormone (GnR...

A total of 226 out of 245 postpartum lactating dairy cows in a commercial dairy farm were allocated to two groups of oestrous synchronisation protocols in order to evaluate reproductive performance. One group was treated with oestradiol benzoate (ODB) and PGF2alpha on day 10 of the oestrous cycle with insemination at the detected oestrus, the secon...

The occurrence of puberty in female Mountain Black (23 kids) and Damascus (13 kids) goat and crossbreds (15 kids) born in two seasons and type of birth were evaluated and body weights and growth rates to puberty were compared. Progesterone concentration in plasma of more than 1 ng/ml was used to determine puberty. Female kids born in the two period...

Sixty postpartum lactating Friesian cows in 3 treatments at a commercial dairy farm were used to study the effect of using progesterone supplementation with GnRH and PGF2 synchronization with and without timed AI on fertility during summer. Cows in treatment1(Tr) and treatment2 (Tr) were fitted with progesterone releasing intravaginal device (PRID)...

The reproductive efficiency of Friesian dairy cows was investigated in a three (oestrous synchronisation technique)×two (seasons of the year) factorial design. The 90 primiparous and multiparous cows (winter, n=42; summer, n=48) were allocated at random to three synchronisation treatments (n=30 cows per treatment). In treatment 1 (GPG), the cows we...