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Protein and energy requirements of growing Philippine native goats / by Elizabeth Jajalla Magay.

By:

Magay, Elizabeth Jajalla [author]

Material type: Text

TextLanguage: English Publication details: Los Ba�os, Laguna, 1982. Cavite State University- Main Campus,Description: 109 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

636.39 M27 1982

Online resources:

Click here to view thesis abstract and table of contents

Production credits:

College of Agriculture, Food, Environment and Natural Resources (CAFENR)

Abstract: ELIZABETH. MAGAY, University of the Philippines at Los Banos, April, 1982. Protein and Energy Requirements of Growing Philippine Native Goats. Major Professor: Dr. Cledualdo B. Perez, Jr. A feeding and slaughter experiment was conducted at the University of the Philippines at Los Banos to determine the protein and energy requirements of native goats at 5 — 14 kg live weight. Nine rations, consisting of various combinations of 3 levels of protein (12, 16, 20% CP) and 3 levels of energy (53, 60, 68% TDN) were used. Dry matter digestibility increased with increasing energy level. Crude 'protein digestibility was not affected by either protein or energy level while that of ether extract was depressed by higher protein. The digestibility of crude fiber was decreased by increasing energy and also by increasing protein level. Weanling goats at 5 kg live weight did not survive on a ration containing 12% CP and 49;6 TDN. They required 16% CP and 59% TDN to produce daily gain of at least 25 g. It higher live weight higher protein and energy levels effected the best gain, but the time lag for the low energy rations to produce similar gain was not as wide as that observed at lower live Rumen pH decreased and total volatile fatty acid increased with increasing energy while ammonia nitrogen increased with increasing protein level. Blood urea nitrogen was increased by increasing protein and decreased by increasing energy level. Carcass composition (% protein, fat) was constant at all levels of protein and energy. The proportion of fat in the non-carcass components, specifically in the viscera, increased with increasing energy level. Increasing energy level promoted higher and more efficient protein deposition and energy accumulation. It also resulted in higher dressing percentage and heavier weight of lean.

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Holdings ( 1 )
Title notes ( 5 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	636.39 M27 1982 (Browse shelf(Opens below))		Link to resource	Room use only	T-1499		00006222

Thesis (Ph.D.--Animal Science) University of the Philippines

Includes bibliographical references.

College of Agriculture, Food, Environment and Natural Resources (CAFENR)

ELIZABETH. MAGAY, University of the Philippines at Los Banos, April, 1982. Protein and Energy Requirements of Growing Philippine Native Goats.
Major Professor: Dr. Cledualdo B. Perez, Jr.
A feeding and slaughter experiment was conducted at the University of the Philippines at Los Banos to determine the protein and energy requirements of native goats at 5 — 14 kg live weight. Nine rations, consisting of various combinations of 3 levels of protein (12, 16, 20% CP) and 3 levels of energy (53, 60, 68% TDN) were used. Dry matter digestibility increased with increasing energy level. Crude 'protein digestibility was not affected by either protein or energy level while that of ether extract was depressed by higher protein. The digestibility of crude fiber was decreased by increasing energy and also by increasing protein level. Weanling goats at 5 kg live weight did not survive on a ration containing 12% CP and 49;6 TDN. They required 16% CP and 59% TDN to produce daily gain of at least 25 g. It higher live weight higher protein and energy levels effected the best gain, but the time lag for the low energy rations to produce similar gain was not as wide as that observed at lower live
Rumen pH decreased and total volatile fatty acid increased with increasing energy while ammonia nitrogen increased with increasing protein level. Blood urea nitrogen was increased by increasing protein and decreased by increasing energy level. Carcass composition (% protein, fat) was constant at all levels of protein and energy. The proportion of fat in the non-carcass components, specifically in the viscera, increased with increasing energy level. Increasing energy level promoted higher and more efficient protein deposition and energy accumulation. It also resulted in higher dressing percentage and heavier weight of lean.

Submitted to the University Library 07/18/2007 T-1499