Performance of growing-fattening lambs fed diets containing different proportions of cotton seed meal

Kandylis, Kostas; Nikokyris, P.; Deligiannis, Kostas

doi:10.1002/(sici)1097-0010(199909)79:12<1613::aid-jsfa409>3.0.co;2-r

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…O peso de abate dos animais foi de 38,8 kg e não foi observada diferença (p>0,05) no rendimento de carcaça quente entre os suplementos com farelo de canola ou farelo de soja. Adicionalmente, Kandylis et al (1999) substituíram o farelo de girassol pelo farelo de algodão, em rações para cordeiros, e não verifi caram diferença (p>0,05) no ganho de peso médio e no rendimento de carcaça quente, os quais foram de 0,215 kg por dia e 55,4%, respectivamente.…”

Section: Methodsunclassified

Desempenho de cordeiros e estimativa da digestibilidade do amido de dietas com diferentes fontes protéicas

Queiróz¹,

Susin²,

Pires³

et al. 2008

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a infl uência de fontes protéicas sobre desempenho, características da carcaça e da carne de cordeiros confi nados, e estimar a digestibilidade do amido de rações com alta proporção de grãos. Foram distribuídos 28 cordeiros Santa Inês, em blocos completos ao acaso, de acordo com o peso vivo e a idade, no início do experimento. As fontes protéicas foram os farelos de: soja, amendoim, canola e algodão, em dietas isonitrogenadas com 90% de concentrado e 10% de volumoso (feno de coast-cross). Na determinação da digestibilidade, foram utilizados quatro borregos em delineamento experimental em quadrado latino 4x4, e a digestibilidade do amido foi estimada a partir do teor de amido fecal. Não houve diferenças (p>0,05) quanto ao consumo de matéria seca, ganho de peso vivo médio, conversão alimentar, características da carcaça e da carne, entre as fontes protéicas avaliadas. A digestibilidade do amido apresentou coefi ciente de determinação de 93%. Independentemente da fonte protéica utilizada, o teor de amido nas fezes é um indicador efi ciente na estimativa da digestibilidade do amido de dietas com alta proporção de concentrado para cordeiros.Termos para indexação: amido fecal, características da carcaça, características da carne, ovinos. Lamb performance and estimation of starch digestibility of diets with different protein sourcesAbstract -The objective of this work was to evaluate the infl uence of protein sources on feedlot lambs performance, carcass and meat characteristics, and to estimate starch digestibility of high grain diets. Twenty-eight Santa Inês ram lambs were selected in a complete randomized block design, according to body weight and age in the beginning of the experiment. Protein sources were the following meals: soybean, peanut, canola, and cottonseed in isonitrogenous diets with 90% concentrate and 10% roughage (coast-cross hay). Four ram lambs (48 kg) were used to determine starch digestibility in a 4x4 latin square design, and starch digestibility was estimated by fecal concentration of starch. There were no differences (p>0.05) for dry matter intake, average daily gain, feed conversion, carcass characteristics and meat quality, among the protein sources evaluated. Determination coeffi cient for starch digestibility was 93%. Fecal starch content is an accurate indicator of the starch digestibility estimation in lambs feeding high grain diets, independently of the protein source used.

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Section: Methodsunclassified

Desempenho de cordeiros e estimativa da digestibilidade do amido de dietas com diferentes fontes protéicas

Queiróz¹,

Susin²,

Pires³

et al. 2008

Pesq. agropec. bras.

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“…A toxina está presente especialmente na parte interna da semente de algodão, confinada em glândulas, em corpos ovo esferoidal com diâmetros entre 100 e 400 µm. As glândulas representam, em geral, 2,4 a 4,8% do miolo da semente, o gossipol e outros pigmentos representam cerca de 20 a 39% da massa das glândulas (SINGLETON, 1973 (KANDYLIS et al, 1999;.…”

Section: Gossipolunclassified

Efeitos da suplementação com caroço de algodão sobre desempenho, metabolismo de nutrientes e qualidade da carne de ovinos

Campos¹

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The aim of this study was to evaluate sheep fed with whole cottonseed on performance parameters, nutrient metabolism, methane emission and meat quality, either the toxixity effect caused by the ingestion of high amount of free gossypol present in animals feed, ensuring food security. The experiment lasted 70 days, using 16 Santa Inês' sheep, with initial body mass of 44 ± 4,7 kg and mean age of 18 ± 2 months, distributed in Control Treatment (TC) and whole cottonseed Treatment (TCA). The feed were offered daily in two periods, consisting of 40% of Tifton hay (Cynodon spp) and 60% of concentrate (50% corn grains and 50% soybean meal, and 100% whole cottonseed, respectively for TC and TCA), also water and minerals were supplied ad libitum. The in vivo study was divided into three periods, performance assay (10 days of adaptation to treatments and 45 days of assay), apparent digestibility assay (5 days of adaptation and 5 days of assay) and enteric methane emissions (2 days of adaptation and 3 days of assay). Bromatological analyzes of feeds, leftovers and excrements were realized to characterize the components, and to determine consumption and weight gain of the animals; Evaluation of ruminal parameters of short chain faty acids (SCFA), pH, ammonia nitrogen (NH3-N) and free gossypol; also estimation of microbial production through the purine derivatives content in urine. After 70 days, the animals remained fasted (16h), then slaughtered and carcasses were evaluated. Physicochemical parameters, carcass yield, centesimal evaluation, meat quality and free gossypol were determined. The inclusion of 60% of whole cottonseed in the concentrate provided an increase in the intake, average digestibility of nutrients, also the nitrogen metabolism; allowing an environment conducive to the activities of ruminal microorganisms, evidenced by ruminal parameters SCFA, pH, NH3-N and CH4 production. However, the animals had lower weight gain in relation to the control diet. The criteria of carcass quality and centesimal composition did not differ between diets. The presence of free gossypol was not detected neither in meat nor in liver samples. Taking into account the quality of Santa Inês' meat, it is suggested that the inclusion up to 60% of whole cottonseed animals' feed, in the confinement termination period would be safe when in substitution of corn and soybeans, without causing intoxication or changes in the carcass, and therefore without risks to human health; contribuiting for the production of food in a secure, safety and sustainable way.

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Effects of substituting hatchery wastes for cotton seed meal in fattening male lamb diets on feed intake, live animal performance, carcass composition and physicochemical characteristics of Longissimus thoracis

et al. 2022

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Performance of growing-fattening lambs fed diets containing different proportions of cotton seed meal

Cited by 5 publications

References 17 publications

Desempenho de cordeiros e estimativa da digestibilidade do amido de dietas com diferentes fontes protéicas

Desempenho de cordeiros e estimativa da digestibilidade do amido de dietas com diferentes fontes protéicas

Efeitos da suplementação com caroço de algodão sobre desempenho, metabolismo de nutrientes e qualidade da carne de ovinos

Effects of substituting hatchery wastes for cotton seed meal in fattening male lamb diets on feed intake, live animal performance, carcass composition and physicochemical characteristics of Longissimus thoracis

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