Thesis (M.Sc.)-Cairo University, 2023.

Bibliography: pages 66-73.

This study aimed to evaluate the effect of adding clay minerals with
different sources of protein in the diets on the performance of the milking goats.
Twenty animals with an average live weight (42.7±1 kg) were used during the
second and third milk seasons. The animals were divided into 4 groups, each group
contains 5 animals according to age, lactation season and production level. The
experimental diets consisted of 50% concentrate feed mixture (soybean meal) and
50% Alfalfa hay the concentrate feed mixture was without clay minerals in the first
diet (R1), while the feed mixture contained 1% of the bentonite in the second diet
(R2), and 1.25% of zeolite in the third diet (R3) and 0.5% Humic acid in the fourth
diet (R4). Milk yield, nutritional components, blood parameters, digestion
parameters and nutritional value were determined The results are summarized in
that the edible from the dry matter DMI significantly didn't differ among all the
treatments. And as for the dry matter digestibility treatments DM, organic matter
OM, raw protein CP, ether extract EE and the nitrogen-free extract NFE, were in
favor of the treatment of bentonite and humic back-to-back, and the crude
bentonite fiber only than the other treatments. The sum of the total digested food
compounds as TDN showed a positive effect of adding bentonite, followed by
humic, The digested crude protein DCP did not differ significantly among all
treatments, and the pH of the rumen did not differ among all treatments, but the
concentration of rumen ammonia differed, and it was the highest with adding
bentonite and volatile fatty acids. The effect before feeding was weak. After
feeding, bentonite was the highest treatment compared to all treatments. In blood
measurements, the percentages of total protein, urea and creatinine did not differ,
while albumin was higher with bentonite and globulin then the control, albumin /
globulin ratio was higher than humic and zeolite. In milk production, solids and
infected substances were Non-fat, fat, lactose and protein were higher with
bentonite. The ash and pH percentages did not differ significantly.

هدفت هذه الدراسة إلى تقييم تأثير إضافة معادن الطين مع مصادر مختلفة من البروتين في العلائق علي أداء الماعز البور الحلاب. تم استخدام عشرون حيوان بمتوسط وزن حي (42.7 ± 1كجم) خلال موسمي الحليب الثاني والثالث. وتم تقسيم الحيوانات إلى 4 مجموعات، كل مجموعة تحتوي على 5 حيوانات حسب العمر و موسم الرضاعة و مستوي الإنتاج. كانت العلائق التجريبية تتكون من 50% من مخلوط العلف المركز و 50% من دريس البرسيم، وكان مخلوط العلف المركز بدون معادن الطين في العليقة الاولي (R1)، بينما كان مخلوط العلف يحتوي علي 1% من البنتونيت في العليقة الثانية (R2), وكان يحتوي علي 1.25% من الزيوليت في العليقة الثالثة (R3) وكان يحتوي علي 0.5% من حمض الهيوميك في العليقة الرابعة (R4).

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Text in English and abstract in Arabic & English.