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Influência dos níveis protéicos fornecidos na dieta sobre o sistema reprodutivo de carneiros

Authors: Siqueira Filho, Edson Ramos de;

Influência dos níveis protéicos fornecidos na dieta sobre o sistema reprodutivo de carneiros

Abstract

Nutrition is one of the main factors that directly affect the productive and reproductive metabolism of animals. Among nutritional factors, protein is one of the most important elements. The objective of this study was to analyze the possible alterations in the reproductive system of rams mediated by the difference of proteins provided in the total diet. Four diets were established, with distinct protein levels: A- (control) 13,4% CP (Crude Protein); 210 g/day MP (Metabolized Protein); B- 11,4% CP and 187 g/day MP; C- 17,5% CP and 231 g /day MP; D-22,4% CP and 215,0 g/day MP. Data collections were performed in D0; D20; D40; D80; D120. During the experiment, animals were weighted and evaluated concerning body condition; semen collection and evaluation were carried out in computer system (CASA); ultrasound examination and testicular cytology; and hormonal count of testosterone, T3 e T4. The results obtained in this study showed that diet is A did not cause changes in the reproductive system of rams. Therefore, it was considered the most appropriate for rams in reproductive activity.

A nutrição é um dos principais fatores que afetam diretamente o metabolismo produtivo e reprodutivo dos animais. Dentre os fatores nutricionais a proteína é um dos elementos mais importantes. Este estudo objetivou a análise de possíveis alterações no sistema reprodutivo de carneiros mediadas pela diferença de proteínas fornecidas na dieta total. Foram instituídas quatro dietas com distintos níveis protéicos: A- (controle) 13,4% PB; 210 g/dia PM; B- 11,4% PB e 187 g/dia PM; C- 17,5% PB e 231 g /dia PM; D-22,4% PB e 215,0 g/dia PM. As coletas de dados foram realizadas em D0; D20; D40; D80; D120. Durante o experimento os animais foram pesados e avaliados quanto a condição corporal; foi feita coleta de sêmen e avaliação em sistema computadorizado (CASA), ultrassonografia e citologia testicular; e dosagem de testosterona, T3 e T4. Os dados obtidos neste estudo, mostraram que a dieta A, não provocou alterações no sistema reprodutivo, portanto foi considerada a mais indicada a carneiros em atividade reprodutiva.

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Pós-graduação em Medicina Veterinária - FMVZ

Country
Brazil
Keywords

Semen, Testis, Carneiro - Reprodução - Aspectos endócrinos, Reprodução animal, Nutrition

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green