Warley Efrem Campos

• PhD
• Ministério da Agricultura Pecuária e Abastecimento - Brasil

Increasing milk production in countries such as Brazil, India and Pakistan implies the generation of dairy by-products such as nutrient-rich bovine whey which, if used in feeding small ruminants would reduce environmental waste and add value to this by-product. Twenty entire male kids weighing an average 17 kg and 5 months age were used. The diet c...

The objective of this study was to evaluate the in situ degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and hemicellulose of elephant grass (Pennisetum purpureum, Schum.) with increasing levels (0; 35.0; 70.0, 105.0, and 140.0 g kg-1) of dried pineapple (Ananas comosus, L.) byproduct (...

The parameters of rumen fermentation and the concentration of purine derivatives in the urine of dairy cows fed with increasing levels of cashew nut in the diet were evaluated. Eight multiparous holstein cows were used, being four rumen cannulated, with average production of 28±4kg of milk/day. The experimental design adopted was a 4x4 Latin square...

This research was carried out to evaluate the effects of pregnancy, number of fetuses and feed restriction on nutrients intake and digestibility and on ruminal rate passage. Twenty-four ewes were used at 90, 110 and 130 pregnancy days distributed among treatments according to the number of fetuses. They received balanced diet or restricted diet at...

Foi avaliada a influência da gestação, do número de fetos e da restrição nutricional no comportamento ingestivo de 24 ovelhas Santa Inês avaliadas aos 90, 110 e 130 dias de gestação, divididas entre os tratamentos em função do número de fetos. Essas receberam dietas à vontade ou restritas, sendo essa com redução de 15% nos requisitos de proteína e...

This research was carried out in order to evaluate effects of pregnancy, fetus number and nutritional restriction on ingestive behavior of ewes. Were used 24 ewes of the breed Santa Ines evaluated at 90, 110 and 130 pregnancy days distributed among treatments according to fetus number. They received free or restricted diet, the last one with reduct...

Foi avaliada a influência da gestação, do número de fetos e da restrição nutricional no comportamento ingestivo de 24 ovelhas Santa Inês avaliadas aos 90, 110 e 130 dias de gestação, divididas entre os tratamentos em função do número de fetos. Essas receberam dietas à vontade ou restritas, sendo essa com redução de 15% nos requisitos de proteína e...

Caracterizaram-se o pelame, a taxa de sudação e os parâmetros histológicos de 71 bovinos F2 (½ Gir x ½ Holandês), 39 machos e 32 fêmeas, entre 14 e 20 meses de idade, submetidos a condições de termoneutralidade (22ºC e 70% de umidade relativa - UR) e ao estresse calórico (42ºC e 60% UR). Os tratamentos foram realizados nas estações de verão e inver...

Caracterizaram-se as respostas clínicas, hematológicas, bioquímicas e hormonais de 71 bovinos F2 (½ Gir x ½ Holandês), 39 machos e 32 fêmeas, entre 14 e 20 meses de idade, submetidos a condições de termoneutralidade (22ºC a 70% de umidade relativa) e ao estresse calórico (42ºC e 60% de umidade relativa). Os tratamentos foram realizados nas estações...

Clinical, haemathological, biochemical, and hormonal parameters were characterized in 39 males and 32 females crossbred cattle (1/2 Holstein x 1/2 Gir), averaging 14 to 20 months of age, submitted to thermoneutrality (22 degrees C and 70% of RH) and heat stress (42 degrees C and 60% RH) in summer and winter in climatic chamber. At clinical examinat...

Coat thickness, sweat rate, and histological parameters were characterized in 39 males and 32 females crossbred cattle (1/2 Holstein x 1/2 Gir), averaging 14 to 20 months of age, submitted to thermoneutrality (22 degrees C and 70% of relative humidity - RH) and heat stress (42 degrees C and 60% RH) in summer and winter in a climatic chamber. Fur le...

p>The study aimed to evaluate the inclusion of cashew by-product (Anacardium occidentale L.) on the ammoniac nitrogen concentrations (N-NH3), pH and vollatile fatty acids concentrations (VFA) of the ruminal fluid, in sheep that received diets containing the cited by-product. Twenty male, entire sheep had been distributed in four treatments with dif...

Com o objetivo de avaliar o valor nutritivo de silagens de capim-elefante (CE) contendo o subproduto do processamento de abacaxi desidratado (SAD), utilizaram-se 20 ovinos, machos não-castrados, distribuídos em delineamento inteiramente casualizado, com cinco tratamentos (0,0; 3,5; 7,0; 10,5 e 14% de SAD na silagem) e quatro repetições. Estimaram-s...

span> Fed intake and milk production of Holstein-Zebu crossbred cows, grazing Napier grass ( Pennisetum purpureum ) (NAP), Brachiaria decumbens (BRA) and Guinea grass ( Pannicum maximum ) (COL) and supplemented with four kg of concentrate, were evaluated in a double Latin square (3x3). Fecal production and feed intake were calculated using Cr<sub>2...

Avaliou-se a digestibilidade in vitro (DIV) e in situ

The intakes of dry matter and neutral detergent fiber (NDF) by crossbred lactating cows were estimated under Brachiaria grazing. Twenty-four cows were allotted in three treatments in order to receive 4, 6, or 8kg of concentrate twice a day, during the milking. The experiment was designed in randomized blocks, being eight blocks with three cows in e...

The intakes of dry matter and neutral detergent fiber (NDF) by crossbred lactating cows were estimated under Brachiaria grazing. Twenty-four cows were allotted in three treatments in order to receive 4, 6, or 8kg of concentrate twice a day, during the milking. The experiment was designed in randomized blocks, being eight blocks with three cows in e...

Avaliou-se a digestibilidade in vitro (DIV) e in situ da matéria seca (MS) e “in situ” da proteína bruta (PB), fibra em detergente neutro (FDN) e fibra em detergente ácido (FDA), celulose e hemicelulose das gramíneas Colonião (Pannicum maximum) (COL), Brachiaria decumbens (BRACH) e Napier (Pennisetum purpureum) (NAP) de amostras colhidasmanualmente...

p class="MsoNormal"> Nutritive value of silages of Elephant grass (Pen-nisetum purpureum, Schum.) mixed with 0; 3.5%; 7.0%; 10.5% and 14.0 % of dehydrated by product from juice industry of cashew fruit (Anacardium occidentale, L) (DBC) was determined. A randomized design was used with four replicates. Silages were opened after 65 days and samples t...

p>Sixteen lambs fed with 0%, 15%, 30% or 45% of tomato by product (TBP) in the diet were used in order to evaluate the intake (I) and apparent digestibility (AD) of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fi-ber (ADF) in a randomized design. There were no diffe-rences in DM-I relate...

An indirect calorimetry system for rapid determination of CO2 and CH4 production and O2 consumption to estimate heat production of animals was built at Escola de Veterinária da Universidade Federal de Minas Gerais, Brazil. Procedures for determination of correction and calibration factors for gas analyzers and the whole system, using standard test...

The in situ procedure was used to evaluate the disappearance of neutral detergent fiber (NDF) and acid detergent fiber (ADF) of skins and whole or grounded (sieve of 2mm) seeds of tomato by-product (TBP). Three steers were used in a split-plot block design. The solubility of NDF showed low values for all the evaluated fractions, been similar among...

Caracterizaram-se as respostas fisiológicas de termorregulação em conforto e estresse calórico de bovinos cruzados F2 (½ Gir x ½ Holandês), machos e fêmeas, com idade entre 14 e 20 meses. Os animais foram alocados, em número de cinco, e submetidos ao conforto térmico (22°C a 70% de umidade relativa) por 12 horas e ao estresse calórico (42ºC e 60% d...

The in situ procedure was used to evaluate the disappearance of neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicelulose and celulose of four sorghum genotypes with (CMS XS 210 and BR 701) or without (CMS XS 214 and BR 007) tannin in a completely randomized block design experiment with three replicates (animals), in a split plot arra...

Avaliaram-se a degradabilidade in situ da fibra detergente neutro (FDN), fibra detergente ácido (FDA), hemicelulose e celulose da silagem de quatro genótipos de sorgo, dois com tanino (CMS XS 210 e BR 701) e dois sem tanino (CMS XS 214 e BR007) em um delineamento de blocos inteiramente ao acaso, com três repetições (animais) em arranjo de parcelas...

The in situ procedure was used to evaluate the disappearance of dry matter (DM) and crude protein (CP) of four sorghum genotypes with (CMS XS 210 and BR 701) or without (CMS XS 214 and BR 007) tannin in a completely randomized block design experiment with three replicates (animals), in a split plot arrangement. The four genotypes were allotted to t...

Avaliaram-se a degradabilidade in situ da matéria seca (MS) e da proteína bruta (PB) da silagem de quatro genótipos de sorgo, dois com tanino (CMS XS 210 e BR 701) e dois sem tanino (CMS XS 214 e BR007) em um delineamento de blocos inteiramente ao acaso, com três repetições (animais), em arranjo de parcelas subdivididas. Os genótipos constituíram a...

This study evaluated the effect of coarse or fine grinding of three forms of corn on the performance of lactating cows. Six diets, fed as total mixed rations, were identical except for the corn portion of the diet. Corn treatments were dry shelled corn, high moisture ensiled ear corn, and high moisture ensiled shelled corn, either coarsely or finel...

Clinical, haemathological, biochemical, and hormonal parameters were characterized in 39 males and 32 females crossbred cattle (½ Holstein x ½ Gir), averaging 14 to 20 months of age, submitted to thermoneutrality (22°C and 70% of RH) and heat stress (42ºC and 60% RH) in summer and winter in climatic chamber. At clinical examination, all animals pre...

Ruminal kinetics of six grazing dairy cows offered four kg of concentrate as a supplement of either elephant grass (Pennisetum purpureum) (NAP), braquiária grass (Brachiaria decumbens) (BRA) or colonião grass (Panicum maximum) (COL) were determined in a duplicate latin square design (3x3). Ruminal retention time for NAP, BRA and e COL were, respect...